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If you want to connect our mail server to an external name server, the following settings must be made so that you can use our mail server. Please note that with an external name server from another provider, the SPAM and mail function are limited! Among others DNSSec, DANE, DKIM and / or the spam […]https://www.firestorm.ch/wp-content/uploads/2019/05/IP-adresse-webhosting.png889330